@article {1487,
	title = {{\"U}bersicht {\"u}ber die Microgasterinen Finnlands (Hym., Brac.) },
	journal = {Notulae Entomologicae},
	volume = {34},
	year = {1955},
	pages = {106-121},
	author = {H{\'e}llen, W.}
}
@article {794,
	title = {Sphecidenfunde aus Finnland II (Hym.). },
	journal = {Notulae Entomologicae},
	volume = {35},
	year = {1955},
	pages = {65-68},
	author = {H{\'e}llen, W.}
}
